Core for paper-rolls.



PATENTED FEB, 13, 1906.

S. H. SMART.

M m Om RE N RU EJ m A M @K 0 PM M I OH OP A SALMA H. SMART, OF GRAND RAPIDS WISCONSIN, ASSIGNOR TO EARL B.

SMART, OF GRAND RAPIDS, WISCONSIN.

CORE FOR PAPER-ROLLS.

Specification of Letters Patent.

Patented. Feb. 13, 1906.

Application filed June 15. 1905. Serial No. 265,363-

To all whom, it may concern.-

Beit known that I, SALMA H. SMART, a citizen of the United States, residing at Grand Rapids, in the county of Wood and State of Wisconsin, have invented certain new and useful Improvements in Cores for Paper- Rolls; and I do declare the following to be a full, clear. and exact description of the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

This invention relates to improvements in cores for paper-rolls.

The object of the invention is to provide a roll constructed in such a manner as to form a perfectly straight and cylindrical core upon which paper may be wound evenly and without wrinkles.

A further object is to provide a roll formed in sections which are firmly interlocked and secured together in such a manner as to leave a rectangular centrally-disposed passage within the same and which after being thus secured or fastened together are adapted to be turned down to form a smooth cylindrical outer surface.

WVith the above and other objects in view the invention consists of certain novel features of construction, combination, and arrangement of parts, as will be hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a perspective view of a paper-roll constructed in accordance with the invention. Fig. 2 is a similar view of the roll in an unfinished state, showing the manner of forming the same. Fig. 3 is a detail perspective view of one of the pieces used in forming the roll, and Fig. 4 is a cross-sectional view showing a modified construction of the roll.

Referring more particularly to Figs. 1, 2, and 3 of the drawings, 1 denotes the roll, which is formed or constructed of a series of counterpart strips 2. Each of the stri s is here shown as being of flat rectangular s iape and having formed in one side and adjacent to one end thereof a longitudinally-disposed groove or channel 3. On the opposite end of the strips 2, near the side of the same hav ing the groove 3, is formed a longitudinallydisposed tongue or rib 4. In assembling the strips to form the body of the roll the end of the strips having the tongue 4 is engaged with the sides of the next adjacent strip in such position that said tongue 4 will enter the groove 3. When the strips have been thus assembled, a construction such as shown in Fig. 2 will be formed, the engaging ends of the strip and the tongue-and-groove portions of the same being securely fastened together by glue or other suitable fastening means. After the strips have been thus assembled and secured together the structure is placed in a turninglathe, in which the outer corner of the strips are cut off and a perfectly smooth and cylindrical outer surface is formed, thereby producing a roll of much greater strength and possessing many improvements over the ordinary or common form of paper-rolls which are usually constructed of a series of segmental strips, which are first formed in the desired shape and afterward nailed or otherwise secured together to form the roll. This manner of constructing the roll has been found ineffective and imperfect in many respects and is inferior both in strength and evenness to the construction of roll herein shown and described.

In Fig. 4 of the drawings is shown a slightlymodified construction of strips forming the roll, said strips in this instance instead of being of counterpart construction are formed in pairs, one pair of which is provided with longitudinally-disposed parallel grooves or channels 5, while the other pair have formed thereon, adjacent to one corner of the same, longitudinally-disposed tongues or ribs 6, which when the strips are assembled are adapted to engage the grooves 5, thus forming a secure interlocking construction of the roll.

From the foregoing construction, taken in connection with the accompanying drawings, the construction and operation of the invention will be readily understood without requiring a more extended explanation.

Various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

The herein-described roll for forming a core for paper-rolls comprising a plurality of pieces or sections 2, each provided with a longitudinal tongue on one edge and a corresponding longitudinal groove on one side, Inyl andin presence of tW subs cr-ibing Witsaid pieces being locked together to form a nesses. roll of circular cross-section, and said roll having a rectangular opening extending .lon- HSMAJRT 5 gitudinally therethrough, substantially as de- Witnesses:

scribed. T. J COOPER,

In testimony whereof I have hereunto set B. H. GHANDOS. 

